If you go to Elisa's website, you'll find How To Make An Elisa. Here's how to make yourself an Allan:

How to make an Allan
Ingredients:
3 parts competetiveness
1 part courage
1 part empathy
Method:
Blend at a low speed for 30 seconds. Add fitness to taste! Do not overindulge!

I think McDonald's is planning to sell these soon as part of their low-fat menu.